Wine preservers are essentially compressed air without the oxygen.

Private Preserve is nitrogen, carbon dioxide, and argon – all of which will not oxidize your whisky.

assuming it is UNOPENED and the seal is intact, you may be able to get some cash from a collector.

However a 50 year old bottle (1965) was already into mass labeling and branding era.

Nevertheless, the 90% of scotch whiskies sold today are blended and at the end of the day, all that matters is the taste you enjoy. It requires a skilled master blender with a refined nose and palate to balance the naturally inconsistencies of whisky, because there are so many factors that affect flavor.

The whiskey itself can have fruity, peaty or grassy flavors, which are then influenced by the cask wood, aging, and even the location in the room!

They were recovered (and replicas were made) so if you can keep it at -30 Celsius, presumably it would last over a hundred years!

If it’s sealed and kept in the right conditions, it could (theoretically) last forever.

In fact, famed explorer Sir Ernest Shackleton abandoned an Antarctic expedition in 1907.

For example, I have a friend in Germany that I always enjoyed spending time with.

We went together on a trip to Paris, stayed at great hotels, enjoyed copious amounts of foie gras and enjoyed life to the fullest.